AT-20.500MAGQ-T

Crystals Overview

The AT-20.500MAGQ-T is a 20.5 MHz fundamental mode quartz crystal manufactured by TXC Corporation. It features a frequency tolerance of ±30ppm and stability of ±50ppm at 25°C. The component operates with a load capacitance of 10pF and an equivalent series resistance (ESR) of 50 Ohms maximum. Designed for surface mount installation, it utilizes the HC-49/US package style. The device supports a wide operating temperature range from -40°C to 85°C and holds AEC-Q200 automotive qualification.

Crystals Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Fundamental oscillation mode operation
• Surface mount compatible HC-49/US package design

Crystals Applications

• Automotive electronic control units
• Microcontroller clock sources
• Communication interface timing circuits

Crystals Procurement Notes

Verify the specific package variant against the datasheet, as HC-49/US typically denotes through-hole but this SMD part uses that footprint designation. Confirm the AEC-Q200 certification status directly with the manufacturer or authorized distributors to ensure compliance with automotive grade requirements. Check for RoHS3 compliance if required by your assembly specifications.

Crystals Selection Notes

Select this component when a 20.5 MHz reference signal is required for automotive or industrial applications. Ensure the circuit design accommodates the 10pF load capacitance and 50 Ohm ESR limits. Verify that the operating environment stays within the specified -40°C to 85°C range. Consider the physical dimensions of the HC-49/US SMD form factor for PCB layout constraints.

Crystals Part Context

This crystal belongs to the AT series of fundamental mode quartz resonators from TXC Corporation. It is distinct from the AA series which targets different automotive packaging styles. The AT series generally provides standard frequency references for general-purpose timing applications requiring moderate stability and robustness.

Crystals Replacement Considerations

Direct substitutes include other 20.5 MHz crystals with identical 10pF load capacitance, ±30ppm tolerance, and HC-49/US SMD footprint. Verify ESR and drive level specifications match before substitution.